What is the minimum order quantity (MOQ) for 491-37-2 4-Chromanone?

The standard MOQ for 491-37-2 4-Chromanone is 1 kg. For bulk orders, we offer competitive pricing with flexible quantities to meet your production needs. Custom packaging is available upon request.

What is the purity and specification of 491-37-2 4-Chromanone?

Our 491-37-2 4-Chromanone typically meets industry standards with a purity of ≥98% (HPLC) for CAS 99. We also supply USP/EP grade and custom specifications. COA (Certificate of Analysis) is provided with each batch.

What documentation is provided with 491-37-2 4-Chromanone?

Each shipment includes COA, MSDS (Material Safety Data Sheet), and packing list. For regulatory compliance, we can also provide GMP documentation, NMR spectra, and HPLC charts upon request.

What are the payment terms for ordering 491-37-2 4-Chromanone?

We accept T/T, L/C, PayPal, and Western Union. For first-time buyers, we recommend T/T 30% deposit with balance against copy of BL. Credit terms are available for repeat customers upon credit approval.

How is 491-37-2 4-Chromanone packaged and shipped?

Standard packaging: 1 kg/aluminum foil bag, 25 kg/fiber drum with double PE bags inside. Shipping via DHL/FedEx/TNT (3-5 days door-to-door) or by air/sea freight for bulk orders. We also offer blind shipping to protect your supplier information.

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Home Products Pharmaceutical Intermediates 491-37-2 4-Chromanone

491-37-2 4-Chromanone

Product Item : 491-37-2 4-Chromanone
Category: Pharmaceutical Intermediates
Purity:99%
Package:100g,1kg,25kg
White to yellow Crystalline Powder, Crystals or Low Melting Mass
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4-Chromanone Basic information

Product Name:	4-Chromanone
Synonyms:	Isochromanone;,3-Dihydro-2-benzopyran-4-one;,3-Dihydro-4-benzopyranone;2,3-dihydro-4-benzopyranone;2,3-dihydro-4h-1-benzopyran-4-on;2,3-Dihydro-4H-1-benzopyran-4-one;4-chormanone;JRH-01801, Chroman-4-one, 97%
CAS:	491-37-2
MF:	C9H8O2
MW:	148.16
EINECS:	207-736-3
Product Categories:	Fused Ring Systems
Mol File:	491-37-2.mol

4-Chromanone Chemical Properties

Melting point	35-38 °C(lit.)
Boiling point	127-128 °C13 mm Hg(lit.)
density	1.1291
refractive index	n20/D 1.575(lit.)
Fp	>230 °F
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
form	Crystalline Powder, Crystals or Low Melting Mass
color	White to yellow
Water Solubility	Slightly soluble in water.
BRN	124652
InChIKey	MSTDXOZUKAQDRL-UHFFFAOYSA-N
LogP	1.990 (est)
CAS DataBase Reference	491-37-2(CAS DataBase Reference)
NIST Chemistry Reference	4H-1-Benzopyran-4-one, 2,3-dihydro-(491-37-2)
EPA Substance Registry System	4H-1-Benzopyran-4-one, 2,3-dihydro- (491-37-2)